Utilize the image processing system of laser
Technical field
The present invention relates to a kind of formation of LGP image of the planar light source device that is used in liquid crystal indicator, lamp box, mobile phone, telephone set, personal hand-held information terminal (PDA), keyboard, computer etc.; Concrete design is a kind of through repeatedly formation stage by stage, thereby makes the output of oscillating laser reach balanced and guarantee that the leaded light image has the inhomogeneity image processing system that utilizes laser.
Background technology
Generally, LGP (light guide panel) provides the plate body in the path of the light that even dispersion and diffused light source scan, and is applicable to that liquid crystal display cells etc. receives light type panel display apparatus or is used in the planar light source device of lamp box etc.
Fig. 1 is the summary sectional view of the existing planar light source device of diagram.
As shown in Figure 1, existing planar light source device (10) comprises LGP (11), is arranged on the reflecting plate (12) of LGP (11) bottom, is arranged on the light source (13) of LGP (11) sidewall and the cover piece (14) that covers light source.Light source (13) can use cold-cathode fluorescence lamp or LED etc.In order to disperse and to spread the light that shines transparent acrylic resin one side, go up at LGP (11) and use prepared Chinese ink printings such as containing particle (bead) shape titanium oxide (TiO2) and glass or acrylic acid to form several leaded light images (15).Planar light source device (10) is shown in arrow, and the irradiate light that light source (13) sends becomes the illuminance that possesses the comparison equilibrium at each position to LGP (11) and through after LGP (11) leaded light through reflecting plate (12) and leaded light image (15) reflection.The light of reflection passes diffuser plate (16) afterwards, passes prismatic lens (17) again and forwards shines.
As above, form the method for the leaded light image (15) of LGP (11), can adopt the method for utilizing carbon dioxide laser.And the output of this carbon dioxide laser laser is inhomogeneous, has deviation, can not guarantee to be formed at the uniformity of the leaded light image (15) of LGP (11).
And generally, image memory module (not shown) storage in advance is about to be formed at the position and the length information of each leaded light image (15) of LGP (11), and reads this information and form the leaded light image.Because many factors, the leaded light image that is formed at existing LGP (11) can occur perhaps twisting outward appearance metabolies such as askew along each leaded light edge of image bending.
Summary of the invention
In order to address the above problem, an object of the present invention is, the output that provides a kind of utilization to make the laser of vibration reaches balanced and guarantees that consequent leaded light image has the image processing system of inhomogeneity laser instrument.
Another object of the present invention provides the image processing system that a kind of utilization can improve the laser instrument of leaded light image productivity ratio.
Another purpose again of the present invention provides the image processing system that a kind of utilization can be got rid of the laser instrument of leaded light picture appearance metaboly.
Technical program of the present invention lies in:
In order to overcome the above problems, the present invention provides a kind of image processing system that utilizes laser instrument, it is characterized in that, comprising:
Video memory, the data of the discontinuity linearity leaded light image that storage will form on LGP;
Controller, after it read said video memory, when the position signalling that is formed at the leaded light image on the LGP was transferred to the X-Y driver, the switching signal that produces based on the length information of said leaded light image was transferred to laser oscillator;
Laser oscillator, based on the switching signal that receives from said controller, output and the synchronization-moving laser beam of laser instrument head;
The X-Y driver, the position signalling based on said controller transmission moves said laser instrument head and work stage;
The laser instrument head moves through the 1st guide rail of said X-Y driver along the left and right directions of said LGP, to the laser beam of vertical lower reflection and the said laser oscillator output of optically focused, thereby on said LGP, forms the leaded light image; And
Work stage moves and fixing said LGP through second guide rail of X-Y driver along the fore-and-aft direction that is fixed on said LGP;
Said leaded light image moves through coming and going of said work stage, through repeatedly forming stage by stage.
And said work stage can be fixed a plurality of LGPs.
In addition, said controller is for each leaded light image that will form at LGP, and said controller reads on the position signalling X coordinate of said video memory and adds arbitrary random number of counting 5 μ m to 100 μ m, thereby changes the starting point that forms the leaded light image.And said controller is for each leaded light image that will form at LGP, and the length information of said controller reading images memory adds arbitrary random number of counting 5 μ m to 100 μ m, thereby changes the length of leaded light image.
In addition, be 1 time if come and go to move number of times, when work stage forwards moved, said laser instrument head to be forming the mode of leaded light image, the 2N+1 of leaded light image (N=0,1,2,3...) row forms the leaded light image stage by stage; And work stage is rearward during return, and said laser instrument head to be forming the mode of leaded light image, the 2N+2 of leaded light image (N=0,1,2,3...) row forms the leaded light image stage by stage.
And, be 1.5 times if come and go to move number of times, when work stage forwards moved, said laser instrument head to be forming the mode of leaded light image, the 3N+1 of leaded light image (N=0,1,2,3...) row forms the leaded light image stage by stage; Work stage is rearward during return, and said laser instrument head to be forming the mode of leaded light image, the 3N+2 of leaded light image (N=0,1,2,3...) row forms the leaded light image stage by stage; And workbench is when forwards moving, and said laser instrument head to be forming the mode of leaded light image, the 3N+3 of leaded light image (N=0,1,2,3...) row forms the leaded light image stage by stage.
In addition, be 2 times if come and go to move number of times, when work stage forwards moved, said laser instrument head to be forming the mode of leaded light image, the 4N+1 of leaded light image (N=0,1,2,3...) row forms the leaded light image stage by stage; Work stage is rearward during return, and said laser instrument head to be forming the mode of leaded light image, the 4N+2 of leaded light image (N=0,1,2,3...) row forms the leaded light image stage by stage; When workbench forwards moved, said laser instrument head was to form the mode of leaded light image, at the 4N+3 of leaded light image (N=0,1,2,3...) the capable leaded light image that forms stage by stage; Work stage is rearward during return, and said laser instrument head to be forming the mode of leaded light image, the 4N+4 of leaded light image (N=0,1,2,3...) row forms the leaded light image stage by stage.
Technique effect of the present invention is:
As stated,, can make the output of the laser of vibration reach balanced, guarantee that consequent leaded light image has uniformity through repeatedly forming the leaded light image stage by stage on LGP according to the present invention.
And, according to the present invention, a plurality of LGPs are fixed on work stage form the leaded light image, thus the productivity effect of raising leaded light image.
In addition, according to the present invention, the starting point of each leaded light image of be about to making through careful change and the mode of length increase the electronic interferences signal especially, thereby get rid of the outward appearance metaboly that the leaded light image occurs.
Description of drawings
Fig. 1 is existing planar light source device sketch map.
Fig. 2 is the overall structure figure according to the image processing system that utilizes laser of the embodiment of the invention.
Fig. 3 is the double-workpiece-table sketch map that can fix 2 LGPs according to the embodiment of the invention.
Fig. 4 be diagram according to the embodiment of the invention form the leaded light image stage by stage the time laser instrument that uses the figure of output characteristics.
Fig. 5 is diagram forms the process of leaded light image stage by stage according to embodiments of the invention figure.
The specific embodiment
Specify according to the most preferred embodiment of utilizing the image processing system of laser of the present invention below with reference to accompanying drawing.The present invention is not limited to the embodiment that records and narrates in the following content, but implements with various different shapes.For embodiment of the present invention intactly and make industry technical staff intactly understand content of the present invention present embodiment is provided.
Fig. 2 illustrates the overall structure figure that utilizes the laser instrument image processing system according to an embodiment of the invention, comprises video memory (210), controller (220), laser oscillator (230), X-Y driver (242,244), laser instrument head (250) and work stage (260).
As shown in Figure 2, video memory (210) storage is about to be formed at the data of the discontinuity linearity leaded light image (11c) on the LGP (11).Particularly, the data of leaded light image (11c) can comprise the position signalling (X coordinate and Y coordinate) and the length information of each leaded light image (11c).
The position signalling of each leaded light image (11c) that controller (220) transmission is read from video memory (210); Particularly; The position signalling that comprises each leaded light image (11c) X coordinate comprises the position signalling of each leaded light image (11c) Y coordinate to the 1st driver (242) transmission to the 2nd driver (244) transmission.And controller (220) is the switching signal that basic generation can oscillating laser oscillator (230) with leaded light image (11c) length information that reads from video memory (210), and the switching signal that generates to laser oscillator (230) transmission.
In addition, laser oscillator (230) is the basis with the switching signal that slave controller (220) receives, the mobile synchronous laser beam of output and laser instrument head (250).
X-Y driver (242,244) can comprise along the 1st guide rail (241) and moves the 1st driver (242) of laser instrument head (250) and along the 2nd guide rail (243) the 2nd driver (244) of direction (260a) travelling workpiece platform (260) forwards, backwards to horizontal direction (250a).The 1st driver (242) and the 2nd driver can pass through for example linear motor driving, but are not to be confined to linear electric motors.
Laser instrument head (250) is formed with integral structure by the 2nd mirror image (251) and camera lens (252); The 2nd mirror image (251) will be reflected along vertical lower by the 1st mirror image (231) laser light reflected light beam, camera lens (252) with the 2nd mirror image (251) laser light reflected beam condenser on the surface of LGP (11) and form leaded light image (11c).
In addition, work stage (260) moves along the 2nd guide rail (243) that is fixed on LGP (11) fore-and-aft direction (260a) through the 2nd driver (244), and work stage (260) goes up lightguide plate fixing (11).
Below specify to utilize and possess the leaded light image forming course that above structural images forms device (200).
As shown in Figure 2; Controller (220) reading images memory (210) transmission is about to be formed on the position signalling of the leaded light image (11c) of LGP (11); Promptly; Transmit the position signalling that comprises each leaded light image (11c) X coordinate to the 1st driver (242), comprise the position signalling of each leaded light image (11c) Y coordinate to the 2nd driver (244) transmission.And controller (220) is the basis with leaded light image (11c) length information that reads from video memory (210), the switching signal that generation can oscillating laser oscillator (230), and this switching signal that generates to laser instrument oscillator (230) transmission.
Then, laser oscillator (230) serves as the mobile synchronous laser beam of basis output and laser instrument head (250) with the switching signal of slave controller (220) reception.The laser beam of output reflexes to laser instrument head (250) through the 1st mirror image (231) that combines with the 1st guide rail (241).Afterwards, the 2nd mirror image (251) and camera lens (252) reflection and optically focused at laser instrument head (250) form leaded light image (11c) on LGP (11) surface.
In addition, Fig. 3 is that diagram can be fixed the figure of the double-workpiece-table of 2 LGPs according to an embodiment of the invention.
As shown in Figure 3, work stage (260) is the center with separating plate (261), and the 1st LGP (11a) can be fixed in the left side, and the 2nd LGP (11b) can be fixed in the right side.According to embodiment, be fixed on the quantity of the LGP of work stage (260), as shown in Figure 3, except 2, can also be a plurality of more than 3.
And Fig. 3 also illustrates the leaded light image (11c) at laser instrument head (250) reflection and optically focused.Leaded light image (11c) is made up of a plurality of row, and each row has then formed a plurality of leaded light images of discontinuity linearity (11c).As shown in Figure 3, reference numeral L1 representes to be formed on the length of each leaded light image (11c) of the 1st LGP (11a), and P1 representes laterally spacing between (250a) leaded light image (11c), and W1 representes spacing between fore-and-aft direction (260a) the leaded light image (11c).Reference numeral L2 representes to be formed on the length of each leaded light image (11c) of the 2nd LGP (11b), and P2 representes laterally spacing between (250a) leaded light image (11c), and W2 representes spacing between fore-and-aft direction (260a) the leaded light image (11c).As shown in Figure 3, also can be L1=L2, P1=P2, W1=W2.According to embodiment,, also can become the length of a certain side LGP (11a) longer the leaded light image setting like L1>L2, P1=P2, W1=W2.
In addition, the output characteristics of the laser instrument that Fig. 4 uses when illustrating and forming the leaded light image stage by stage according to embodiments of the invention, Fig. 5 illustrates the process sketch map that forms the leaded light image according to embodiments of the invention stage by stage.
Like Fig. 2 and shown in Figure 4, as shown in Figure 4 from the laser beam of laser oscillator (230) output, have along with the time period (t1, t2, t3) vibrates and has the output characteristics (P of certain deviation
Out1, P
Out2, P
Out3).Because this kind output characteristic of laser can form uneven leaded light image (11c) on the LGP (11).Therefore, according to the present invention, for balanced this kind output characteristic of laser, through repeatedly forming leaded light image (11c) stage by stage.Specify its method below with reference to Fig. 5.
Like Fig. 2 and shown in Figure 5, under the control of controller (220), direction (260a) is round mobile forwards, backwards along the 2nd guide rail (243) for the work stage (260) of lightguide plate fixing (11).When work stage (260) moved, laser instrument head (250) slipped a line and forms leaded light image (11c).
According to the 1st embodiment, if the round mobile number of times of work stage (260) is 1 time, when work stage (260) forwards moved, laser instrument head (250) was at the 2N+1 (N=0 of leaded light image (11c); 1,2,3....) row forms the leaded light image; Rearward during return, laser instrument head (250) is in 2N+2 (N=0,1 of leaded light image (11c) for work stage (260); 2,3 ...) row formation leaded light image.
According to the 2nd embodiment, if the round mobile number of times of work stage (260) is 1.5 times, when work stage (260) forwards moved, laser instrument head (250) was at the 3N+1 (N=0 of leaded light image (11c); 1,2,3 ...) row formation leaded light image; Rearward during return, laser instrument head (250) is in 3N+2 (N=0,1,2 of leaded light image (11c) for work stage (260); 3 ...) row formation leaded light image, when work stage (260) forwards moved, laser instrument head (250) was at the 3N+3 (N=0 of leaded light image (11c); 1,2,3....) row forms the leaded light image.
According to the 3rd embodiment, if the round mobile number of times of work stage (260) is 2 times, when work stage (260) forwards moved, laser instrument head (250) was in 4N+1 (N=0,1 of leaded light image (11c); 2,3....) row forms the leaded light image, and rearward during return, laser instrument head (250) is at the 4N+2 (N=0 of leaded light image (11c) for work stage (260); 1,2,3 ...) row formation leaded light image; When work stage (260) forwards moved, laser instrument head (250) was in 4N+3 (N=0,1,2 of leaded light image (11c); 3 ...) row forms the leaded light image, and rearward during return, laser instrument head (250) is at the 4N+4 (N=0 of leaded light image (11c) for work stage (260); 1,2,3 ...) row formation leaded light image.
Except the 1st embodiment to the 3 embodiment, those skilled in the art can change the number of times that forms stage by stage based on the technical characterictic that the present invention records and narrates.And like the technical characterictic that the present invention records and narrates, those skilled in the art should understand not travelling workpiece platform (260), but direction (260a) moves laser instrument head (250) and forms the method for leaded light image (11c) stage by stage forwards, backwards.
And controller (220) reads position and the length information of each leaded light image (11c) that is about to be formed at LGP (11) from video memory (210) and forms leaded light image (11c).Because various factors, the leaded light image (11c) that is formed at LGP (11) can occur perhaps twisting outward appearance metabolies such as askew along the curved edge of each leaded light image (11c).Therefore, the present invention increases the electronic interferences signal especially in order to get rid of the outward appearance metaboly.
More particularly; Controller (220) is for each leaded light image (11c) that is about to be formed at LGP (11); X coordinate at the position signalling that reads from video memory (210) adds arbitrary random number of counting 5 μ m to 100 μ m and is transferred to the 1st driver (242), changes the starting point X that forms leaded light image (11c).Perhaps; Controller (220) generates the length information L that reads from video memory (210) for each leaded light image (11c) that is about to be formed at LGP (11) and adds the switching signal of arbitrary random number of count 5 μ m to 100 μ m and be transferred to laser oscillator (230), the length of change leaded light image.As stated, according to the present invention, increase the electronic interferences signal especially and get rid of the outward appearance metaboly.
Above drawing and description write up most preferred embodiment, and in the record process, used particular term.The application target of this particular term only is to explain the present invention, is not in order to limit implication or to limit the claim scope of putting down in writing in claims.Given this, those skilled in the art should recognize for the present invention and can implement modification and other identical embodiment.Therefore, should confirm real technical protection request scope of the present invention according to the technical characterictic of claims.